101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
|
/*
|
||
|
|
* TLB shootdown specifics for powerpc
|
||
|
|
*
|
||
|
|
* Copyright (C) 2002 Anton Blanchard, IBM Corp.
|
||
|
|
* Copyright (C) 2002 Paul Mackerras, IBM Corp.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
#ifndef _ASM_POWERPC_TLB_H
|
||
|
|
#define _ASM_POWERPC_TLB_H
|
||
|
|
#ifdef __KERNEL__
|
||
|
|
|
||
|
|
#ifndef __powerpc64__
|
||
|
|
#include <asm/pgtable.h>
|
||
|
|
#endif
|
||
|
|
#include <asm/pgalloc.h>
|
||
|
|
#ifndef __powerpc64__
|
||
|
|
#include <asm/page.h>
|
||
|
|
#include <asm/mmu.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <linux/pagemap.h>
|
||
|
|
|
||
|
|
#define tlb_start_vma(tlb, vma) do { } while (0)
|
||
|
|
#define tlb_end_vma(tlb, vma) do { } while (0)
|
||
|
|
#define __tlb_remove_tlb_entry __tlb_remove_tlb_entry
|
||
|
|
#define tlb_remove_check_page_size_change tlb_remove_check_page_size_change
|
||
|
|
|
||
|
|
extern void tlb_flush(struct mmu_gather *tlb);
|
||
|
|
|
||
|
|
/* Get the generic bits... */
|
||
|
|
#include <asm-generic/tlb.h>
|
||
|
|
|
||
|
|
extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
|
||
|
|
unsigned long address);
|
||
|
|
|
||
|
|
static inline void __tlb_remove_tlb_entry(struct mmu_gather *tlb, pte_t *ptep,
|
||
|
|
unsigned long address)
|
||
|
|
{
|
||
|
|
#ifdef CONFIG_PPC_STD_MMU_32
|
||
|
|
if (pte_val(*ptep) & _PAGE_HASHPTE)
|
||
|
|
flush_hash_entry(tlb->mm, ptep, address);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void tlb_remove_check_page_size_change(struct mmu_gather *tlb,
|
||
|
|
unsigned int page_size)
|
||
|
|
{
|
||
|
|
if (!tlb->page_size)
|
||
|
|
tlb->page_size = page_size;
|
||
|
|
else if (tlb->page_size != page_size) {
|
||
|
|
if (!tlb->fullmm)
|
||
|
|
tlb_flush_mmu(tlb);
|
||
|
|
/*
|
||
|
|
* update the page size after flush for the new
|
||
|
|
* mmu_gather.
|
||
|
|
*/
|
||
|
|
tlb->page_size = page_size;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_SMP
|
||
|
|
static inline int mm_is_core_local(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
return cpumask_subset(mm_cpumask(mm),
|
||
|
|
topology_sibling_cpumask(smp_processor_id()));
|
||
|
|
}
|
||
|
|
|
||
|
|
#ifdef CONFIG_PPC_BOOK3S_64
|
||
|
|
static inline int mm_is_thread_local(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
if (atomic_read(&mm->context.active_cpus) > 1)
|
||
|
|
return false;
|
||
|
|
return cpumask_test_cpu(smp_processor_id(), mm_cpumask(mm));
|
||
|
|
}
|
||
|
|
#else /* CONFIG_PPC_BOOK3S_64 */
|
||
|
|
static inline int mm_is_thread_local(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
return cpumask_equal(mm_cpumask(mm),
|
||
|
|
cpumask_of(smp_processor_id()));
|
||
|
|
}
|
||
|
|
#endif /* !CONFIG_PPC_BOOK3S_64 */
|
||
|
|
|
||
|
|
#else /* CONFIG_SMP */
|
||
|
|
static inline int mm_is_core_local(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int mm_is_thread_local(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __KERNEL__ */
|
||
|
|
#endif /* __ASM_POWERPC_TLB_H */
|